Interface SignalListItemFactory.SetupCallback

All Superinterfaces:
FunctionPointer
Enclosing class:
SignalListItemFactory
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface public static interface SignalListItemFactory.SetupCallback extends FunctionPointer

Functional interface declaration of the SetupCallback callback.

See Also:

  • Method Details

    • run

      void run(@Nullable GObject object)

      Emitted when a newly created listitem needs to be prepared for use.

      It is the first signal emitted for every listitem.

      The handler for this signal must call ListItem.setChild(Widget) to populate the listitem with widgets.

      The Gtk.SignalListItemFactory::teardown signal is the opposite of this signal and can be used to undo everything done in this signal.

    • upcall

      default void upcall(MemorySegment sourceSignalListItemFactory, MemorySegment object)
      The upcall method is called from native code. The parameters are marshaled and run(GObject) is executed.

    • toCallback

      default MemorySegment toCallback(Arena arena)
      Creates a native function pointer to the upcall(MemorySegment, MemorySegment) method.
      Specified by:
      toCallback in interface FunctionPointer
      Parameters:
      arena - the arena in which the function pointer is allocated
      Returns:
      the native function pointer